The Hurricane's first appearance was actually a redrawn Mercury
story, but once Captain America Comics took off Hurricane took on
a life of his own. During the Golden Age the Hurricane was the "son of
Thor, god of Thunder, and the last descendant of the ancient Greek immortals."
This is, needless to say, a rather confused mythology, but the strip has
vigorous Jack Kirby art, so no one was going to complain too loudly. The
Hurricane came to Earth from Mt. Olympus to fight his ancestral enemy,
"Pluto, the Devil." He did so both as the Hurricane and in the mortal guise
of "Jake Curtiss." In some of the later stories he was aided in his task
by the portly storekeeper Speedy Scriggles.

In the modern era, in the pages of Marvel Universe, it was revealed
that the Hurricane, like Mercury, was actually the EternalMakkari
in disguise.